Cloning contradicts natural selection because it creates identical copies of organisms, rather than allowing for genetic diversity and variation necessary for species to evolve and adapt to changing environments. Natural selection relies on genetic variation for the process of evolution to occur, which is limited in cloned organisms.
no there is no genetic variation for natural selection to act upon
Genetic variation is necessary for natural selection to occur. This variation provides the raw material for differential survival and reproduction, which drives the process of natural selection. Without genetic variation, there would be no differences for natural selection to act upon.
Artificial selection tends to occur more quickly than natural selection because it involves intentional breeding by humans to promote desired traits in organisms. This focused approach can lead to rapid changes in specific characteristics over a few generations. In contrast, natural selection operates through environmental pressures and can take much longer for significant changes to occur, as it relies on random genetic variations and survival advantages over time.
Natural selection requires variation in traits within a population, heritability of those traits, and differential reproductive success based on those traits. Without these components, natural selection cannot act on a population.
The four principles of natural selection (variation, inheritance, differential reproduction, and adaptation) are necessary for natural selection to occur because they describe the process by which certain traits are passed on to future generations based on their ability to help individuals survive and reproduce in their environment. Variation provides the raw material for natural selection, inheritance ensures that beneficial traits can be passed down, differential reproduction leads to the accumulation of advantageous traits in a population, and adaptation allows organisms to better survive and thrive in their environment over time.
There are really no steps in natural selection - just conditions required for it to occur.
What population? Perhaps you mean if there were no variation for natural selection to select from.
Cloning contradicts natural selection because it creates identical copies of organisms, rather than allowing for genetic diversity and variation necessary for species to evolve and adapt to changing environments. Natural selection relies on genetic variation for the process of evolution to occur, which is limited in cloned organisms.
Without genetic diversity, natural selection cannot occur
the presence of predators
no there is no genetic variation for natural selection to act upon
Natural selection
Genetic variation is necessary for natural selection to occur. This variation provides the raw material for differential survival and reproduction, which drives the process of natural selection. Without genetic variation, there would be no differences for natural selection to act upon.
For natural selection to occur, there must be genetic variation present in a population, some of which is heritable. This variation must lead to differences in survival and reproduction (differential fitness). Individuals with advantageous traits must pass those traits on to their offspring. Over time, these advantageous traits become more common in the population.
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
genetic drift, mutation, natural selection, and migration